Toxicity and environment
Metallurgy of selenium and tellurium

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M2370 V1 Article

Toxicity and environment


Metallurgy of selenium and tellurium

Authors : Pierre BLAZY, El-Aïd JDID

Publication date: June 10, 2008 | Lire en français

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10. Toxicity and environment

10.1 Toxicity

Being strong reducing agents, selenium and tellurium have a marked effect on living organisms. In their solid state, these elements are practically harmless. On the other hand, selenium vapours and its hydride are highly toxic [39] . The toxicity of the hydride, which boils at 42°C, is very marked. The same applies to halides and oxides, which are also powerful reducing agents. Soluble selenites and selenates, and organoselenates must be handled with care [23] .

Like selenium, tellurium poses toxicity problems through its hydride (whose very unpleasant odor is perceptible...

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